Remove old HTML app list start page.

chrome/browser/resources/app_list/start_page.css

Index: chrome/browser/resources/app_list/start_page.css
diff --git a/chrome/browser/resources/app_list/start_page.css b/chrome/browser/resources/app_list/start_page.css
index 164c3f9887f36ac4dc23d8d21b114ce597f26eab..2a6049fc99ba770c6cfd1d1fb83a9226d2e38e07 100644
--- a/chrome/browser/resources/app_list/start_page.css
+++ b/chrome/browser/resources/app_list/start_page.css
@@ -3,8 +3,7 @@
  * found in the LICENSE file. */
 
 html,
-body,
-#start-page {
+body {
   background-color: rgb(245, 245, 245);
   height: 100%;
   margin: 0;
@@ -13,16 +12,6 @@ body,
   width: 100%;
 }
 
-#start-page {
-  -webkit-align-items: stretch;
-  -webkit-flex-direction: column;
-  -webkit-justify-content: flex-start;
-  -webkit-user-select: none;
-  box-sizing: border-box;
-  display: -webkit-flex;
-  padding: 10px;
-}
-
 #logo {
   background-image: -webkit-image-set(
     url(chrome://theme/IDR_LOCAL_NTP_IMAGES_LOGO_PNG) 1x,
@@ -31,5 +20,3 @@ body,
   margin: auto;
   width: 269px;
 }
-
-<include src="recommended_apps.css">